MySQL generate url using already assigned ID - php

Question

I'm trying to generate URL in SQL database using already assigned auto_incremented ID
When a new form is submitted then SQL automatically generates and unique lens_id for me. How can I automatically add it there in this lens_url? (Picture below)

Answer 1

You can do this by creating a trigger on your table. Trigger is as follows,
DELIMITER $$
CREATE TRIGGER `UpdateLensURL` BEFORE INSERT ON `your_table_name`
FOR EACH ROW BEGIN
SET NEW.lens_url= CONCAT('localhost:8888/lensview/post.php?id=', (
SELECT AUTO_INCREMENT
FROM information_schema.TABLES
WHERE TABLE_SCHEMA = DATABASE()
AND TABLE_NAME = 'your_table_name'
));
END;
$$
DELIMITER ;

Answer 2

There are two options here:
1) Use a stored procedure (which will require code changes for anywhere that inserts rows)
2) Use a trigger and insert as normal - something like below should do the trick:
DELIMITER //
CREATE TRIGGER my_awesome_trigger
BEFORE INSERT
ON your_table_name
FOR EACH ROW
BEGIN
DECLARE next_id int default 0;
SELECT auto_increment INTO next_id
FROM information_schema.tables
WHERE table_name = 'your_table_name'
AND table_schema = DATABASE();
SET NEW.lens_url = CONCAT('localhost:8888/.../', next_id);
END; //
DELIMITER ;

Answer 3

Try something like this
$qry1="insert into tablename(lens_name,lens_url,lens_category,lens_author,lens_discription,lens_repert)values('A','B','C','D','E','F')";// your query to insert data to table
mysqli_query($con,$qry1); // run query
$last_insertid=mysqli_insert_id($con); // save last insetred ID
$url="localhost:8888/lenseview/post.php?id=".$last_insertid; //prepare url
$qry2="upadte tablename set lens_url=$url where lens_id=$last_insertid"; //update query
mysqli_query($con,$qry2); // run your query to update url

Answer 4

I think easiest option would be this
$Last_Lens_IdQ = mysqli_query($conn, "SELECT `lens_id` FROM `table` ORDER BY `lens_id` DESC LIMIT 1");
$Last_LensId = mysqli_fetch_array($Last_Lens_IdQ);
$x = $Last_Lens[0]++;
$LensUrl = "localhost:8888/lenseview/post.php?id=".$x;
Then insert the field and use $LensUrl When inserting the lens url column